Hi all,
I'm generating a binding from Python to C using SWIG. On the C side I
have iterators over some data structures. On the Python side I
currently use code like the following:
def get_data(obj):
result = []
iter = make_iter(obj)
while more(iter):
item = next(iter)
result.append(item)
destroy(iter)
return result
Now I'd like to transform it to a generator function like the following
in order to make it more memory and time efficient:
def get_data(obj):
iter = make_iter(obj)
while more(iter):
yield next(iter)
destroy(iter)
But in the generator case, I have a problem if the generator object is
not iterated till the StopIteration occurs, but if iteration is stopped
earlier. In that case, the C iterator's destroy is not called, thus the
resource is not freed.
Is there a way around this? Can I add some sort of __del__() to the
generator object so that in case of an early destruction of the
generator object, the external resource is freed as well?
I'm looking forward to hearing your hints!
--
Stefan Bellon
--
http://mail.python.org/mailman/listinfo/python-list
